<template>
  <div class="dashboard-container">
    <div class="app-container">
      <el-card>
        <el-tabs>
          <!-- 放置页签 -->
          <el-tab-pane label="角色管理">
            <!-- 新增角色按钮 -->
            <el-row style="height:60px">
              <el-button
                icon="el-icon-plus"
                size="small"
                type="primary"
                @click="hAdd"
              >新增角色</el-button>
            </el-row>
            <!-- 表格 -->
            <el-table :data="list">
              <el-table-column label="序号" width="120" type="index" />
              <el-table-column label="角色名称" width="240" prop="name" />
              <el-table-column label="描述" prop="description" />
              <el-table-column label="操作">
                <template #default="{row}">
                  <el-button size="small" type="success">分配权限</el-button>
                  <el-button size="small" type="primary" @click="hEdit(row.id)">编辑</el-button>
                  <el-button
                    size="small"
                    type="danger"
                    @click="hDel(row.id)"
                  >删除</el-button>
                </template>
              </el-table-column>
            </el-table>

            <el-row type="flex" justify="center" align="middle" style="height: 60px">
              <!-- 分页组件 -->
              <el-pagination
                :current-page="currentPage4"
                :page-sizes="[2, 3, 5, 10]"
                :page-size="pageParams.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total"
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
              />
            </el-row>
          </el-tab-pane>
        </el-tabs>
      </el-card>
      <!-- 新增弹层 -->
      <!-- 新增弹框 -->
      <el-dialog
        :title="isEdit ?'编辑' : '新增'"
        :close-on-click-modal="false"
        :close-on-press-escape="false"
        :visible.sync="showDialog"
        @close="resetForm"
      >
        <el-form ref="roleForm" :model="roleForm" :rules="rules" label-width="100px">
          <el-form-item label="角色名称" prop="name">
            <el-input v-model="roleForm.name" />
          </el-form-item>
          <el-form-item label="角色描述" prop="description">
            <el-input v-model="roleForm.description" />
          </el-form-item>
        </el-form>
        <!-- 底部 -->
        <el-row slot="footer" type="flex" justify="center">
          <el-col :span="6">
            <el-button size="small" @click="showDialog=false">取消</el-button>
            <el-button size="small" type="primary" @click="hSubmit">确定</el-button>
          </el-col>
        </el-row>
      </el-dialog>
    </div>
  </div>
</template>
<script>
import { getRoles, addRoles, delRoles, getRolesDetail, updateRoles } from '@/api/setting'
export default {
  data() {
    return {
      isEdit: false, // 新增或者编辑 true编辑/false为新增
      showDialog: false, // 弹层默认是关闭的
      // 收集表单的数据对象
      roleForm: {
        name: '', // 角色名称
        description: '' // 角色描述
      },
      currentPage4: 2,
      // 验证规则
      rules: {
        name: [
          { required: true, message: '角色名称不能为空', trigger: 'blur' }
        ],
        description: [
          { required: true, message: '角色描述不能为空', trigger: 'blur' }
        ]
      },
      list: [], // 保存角色列表
      pageParams: {
        page: 1, // 页码值
        pagesize: 2 // 每页显示条数
      },
      total: 0 // 角色总数

    }
  },
  created() {
    this.loadRoles()
  },
  methods: {
    // 重置表单
    resetForm() {
      this.$refs.roleForm.resetFields()
    },
    // 获取表单的数据回填到编辑表单上
    async loadRolesDetail(id) {
      try {
        // 发送请求
        const res = await getRolesDetail(id)
        console.log('回填的数据', res)
        if (res.code === 10000) {
          this.roleForm = res.data
        }
      } catch (error) {
        console.log(error)
      }
    },
    hEdit(id) {
      this.isEdit = true // 编辑状态
      this.showDialog = true
      this.loadRolesDetail(id)
    },
    hAdd() {
      this.isEdit = false // 新增状态
      this.showDialog = true
    },
    // 删除
    hDel(id) {
      this.$confirm('你确定要删除吗?').then(async() => {
        // 发送请求
        const res = await delRoles(id)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        // 删除成功 重新渲染
        // 删除的优化/每次删除页面往前一页
        if (this.list.length === 1) {
          this.pageParams.page--
          // 页码值最小是1
          if (this.pageParams.page <= 0) {
            this.pageParams.page = 1
          }
        }
        this.loadRoles()
      }).catch(error => error)
    },
    // 新增角色的兜底校验
    hSubmit() {
      this.$refs.roleForm.validate(valid => {
        if (!valid) return // 校验失败
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    },
    async doAdd() {
      // 发送新增角色的请求
      const res = await addRoles(this.roleForm)
      if (res.code !== 10000) return this.$message.error(res.message)
      this.$message.success(res.message)
      // 重新请求渲染
      this.loadRoles()
      this.showDialog = false // 关闭弹窗
      // 将页面值翻到最后一页
      this.total++
      const maxPage = Math.ceil(this.total / this.pageParams.pagesize)
      this.pageParams.page = maxPage // 页码翻到最后一页
    },
    // 编辑
    async doEdit() {
      try {
        const res = await updateRoles(this.roleForm)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        // 重新请求渲染
        this.loadRoles()
        this.showDialog = false // 关闭弹窗
      } catch (error) {
        console.log(error)
      }
    },
    handleSizeChange(val) {
      console.log(`每页 ${val} 条`)
      this.pageParams.pagesize = val
      // 重新请求渲染
      this.loadRoles()
    },
    handleCurrentChange(val) {
      console.log(`当前页: ${val}`)
      this.pageParams.page = 1
      this.pageParams.page = val
      // 重新请求渲染
      this.loadRoles()
    },
    // 获取角色列表
    async loadRoles() {
      try {
        const res = await getRoles(this.pageParams)
        console.log('查询角色列表', res)
        if (res.code !== 10000) return this.$message.error(res.message)
        this.$message.success(res.message)
        this.list = res.data.rows
        this.total = res.data.total
      } catch (error) {
        console.log(error)
      }
    }

  }
}
</script>
